Studio renovation - some logistics

When I left home this morning, all my fabric was in (a) a big cupboard; (b) another "cupboard" which is actually drawers; (c) the corner of the room where the ironing board used to live; or (d) the corner of the room where the bed used to be. Oh, and all the white fabric was (and is) happily and neatly in the wire baskets in the airing cupboard, along with the ailing boiler.

When I returned this afternoon, my domestic assistant and home project manager had moved cupboard (b) - but not before moving the heaps from (c), in front of it, further into the corner, indeed into most of the rest of the room. Heaps at location (d) also needed to be shifted, so that cupboard (a) could be moved beside cupboard (b)'s new position.
Cupboard (a) is solid and heavy. Everything had to come out so that it could be moved - and the only place left was the landing ... and kitchen -
The cupboard has been moved, the contents returned to it. The project manager wants to get on with the building bit.

When the worktop is extended into the vacant corner, stackable plastic boxes will go under it, to hold the fabric currently in cupboard (a) and corners (c) and (d). Will it all fit? - well, that's a rhetorical question ... I know lots of it simply has to go.

A real question: where to get stackable transparent plastic boxes? The bottom one in each stack should have wheels, and they should be quite big - and preferably the higher ones in the stack should be about half the depth of the wheeled one. Impossible??